3 * Copyright (c) 1991-1994, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Sam sat on the ground and put his head in his hands. 'I wish I had never
12 * come here, and I don't want to see no more magic,' he said, and fell silent."
18 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
30 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
37 typedef struct magic_state MGS;
39 static void restore_magic _((void *p));
46 assert(SvMAGICAL(sv));
49 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
50 SAVEDESTRUCTOR(restore_magic, mgs);
54 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
64 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
67 SvFLAGS(sv) |= mgs->mgs_flags;
71 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
81 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
82 MGVTBL* vtbl = mg->mg_virtual;
84 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
88 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
104 save_magic(&mgs, sv);
107 while ((mg = *mgp) != 0) {
108 MGVTBL* vtbl = mg->mg_virtual;
109 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
110 (*vtbl->svt_get)(sv, mg);
111 /* Ignore this magic if it's been deleted */
112 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
113 (mg->mg_flags & MGf_GSKIP))
116 /* Advance to next magic (complicated by possible deletion) */
117 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
118 mgp = &mg->mg_moremagic;
122 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
138 save_magic(&mgs, sv);
140 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
141 MGVTBL* vtbl = mg->mg_virtual;
142 nextmg = mg->mg_moremagic; /* it may delete itself */
143 if (mg->mg_flags & MGf_GSKIP) {
144 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
147 if (vtbl && vtbl->svt_set)
148 (*vtbl->svt_set)(sv, mg);
163 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
164 MGVTBL* vtbl = mg->mg_virtual;
165 if (vtbl && vtbl->svt_len) {
169 save_magic(&mgs, sv);
170 /* omit MGf_GSKIP -- not changed here */
171 len = (*vtbl->svt_len)(sv, mg);
177 junk = SvPV(sv, len);
189 save_magic(&mgs, sv);
191 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
192 MGVTBL* vtbl = mg->mg_virtual;
193 /* omit GSKIP -- never set here */
195 if (vtbl && vtbl->svt_clear)
196 (*vtbl->svt_clear)(sv, mg);
209 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
210 if (mg->mg_type == type)
217 mg_copy(sv, nsv, key, klen)
225 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
226 if (isUPPER(mg->mg_type)) {
227 sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
240 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
241 MGVTBL* vtbl = mg->mg_virtual;
242 moremagic = mg->mg_moremagic;
243 if (vtbl && vtbl->svt_free)
244 (*vtbl->svt_free)(sv, mg);
245 if (mg->mg_ptr && mg->mg_type != 'g')
247 Safefree(mg->mg_ptr);
248 else if (mg->mg_len == HEf_SVKEY)
249 SvREFCNT_dec((SV*)mg->mg_ptr);
250 if (mg->mg_flags & MGf_REFCOUNTED)
251 SvREFCNT_dec(mg->mg_obj);
258 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
273 switch (*mg->mg_ptr) {
274 case '1': case '2': case '3': case '4':
275 case '5': case '6': case '7': case '8': case '9': case '&':
276 if (curpm && (rx = curpm->op_pmregexp)) {
277 paren = atoi(mg->mg_ptr);
279 if (paren <= rx->nparens &&
280 (s = rx->startp[paren]) &&
281 (t = rx->endp[paren]))
291 if (curpm && (rx = curpm->op_pmregexp)) {
292 paren = rx->lastparen;
299 if (curpm && (rx = curpm->op_pmregexp)) {
300 if ((s = rx->subbeg) && rx->startp[0]) {
301 i = rx->startp[0] - s;
308 if (curpm && (rx = curpm->op_pmregexp)) {
309 if (rx->subend && (s = rx->endp[0])) {
317 return (STRLEN)ofslen;
319 return (STRLEN)orslen;
322 if (!SvPOK(sv) && SvNIOK(sv))
340 switch (*mg->mg_ptr) {
341 case '\001': /* ^A */
342 sv_setsv(sv, bodytarget);
344 case '\004': /* ^D */
345 sv_setiv(sv, (IV)(debug & 32767));
347 case '\005': /* ^E */
350 # include <descrip.h>
351 # include <starlet.h>
353 $DESCRIPTOR(msgdsc,msg);
354 sv_setnv(sv,(double) vaxc$errno);
355 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
356 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
362 sv_setnv(sv, (double)Perl_rc);
363 sv_setpv(sv, os2error(Perl_rc));
365 sv_setnv(sv, (double)errno);
366 sv_setpv(sv, errno ? Strerror(errno) : "");
369 SvNOK_on(sv); /* what a wonderful hack! */
371 case '\006': /* ^F */
372 sv_setiv(sv, (IV)maxsysfd);
374 case '\010': /* ^H */
375 sv_setiv(sv, (IV)hints);
379 sv_setpv(sv, inplace);
381 sv_setsv(sv, &sv_undef);
383 case '\017': /* ^O */
384 sv_setpv(sv, osname);
386 case '\020': /* ^P */
387 sv_setiv(sv, (IV)perldb);
389 case '\024': /* ^T */
391 sv_setnv(sv, basetime);
393 sv_setiv(sv, (IV)basetime);
396 case '\027': /* ^W */
397 sv_setiv(sv, (IV)dowarn);
399 case '1': case '2': case '3': case '4':
400 case '5': case '6': case '7': case '8': case '9': case '&':
401 if (curpm && (rx = curpm->op_pmregexp)) {
402 paren = atoi(GvENAME((GV*)mg->mg_obj));
404 if (paren <= rx->nparens &&
405 (s = rx->startp[paren]) &&
406 (t = rx->endp[paren]))
413 was_tainted = tainted;
418 tainted = was_tainted || rx->exec_tainted;
423 sv_setsv(sv,&sv_undef);
426 if (curpm && (rx = curpm->op_pmregexp)) {
427 paren = rx->lastparen;
431 sv_setsv(sv,&sv_undef);
434 if (curpm && (rx = curpm->op_pmregexp)) {
435 if ((s = rx->subbeg) && rx->startp[0]) {
436 i = rx->startp[0] - s;
440 sv_setsv(sv,&sv_undef);
443 if (curpm && (rx = curpm->op_pmregexp)) {
444 if (rx->subend && (s = rx->endp[0])) {
449 sv_setsv(sv,&sv_undef);
453 if (GvIO(last_in_gv)) {
454 sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv)));
459 sv_setiv(sv, (IV)STATUS_CURRENT);
460 #ifdef COMPLEX_STATUS
461 LvTARGOFF(sv) = statusvalue;
462 LvTARGLEN(sv) = statusvalue_vms;
466 s = IoTOP_NAME(GvIOp(defoutgv));
470 sv_setpv(sv,GvENAME(defoutgv));
475 s = IoFMT_NAME(GvIOp(defoutgv));
477 s = GvENAME(defoutgv);
482 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv)));
485 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv)));
488 sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv)));
496 sv_setiv(sv, (IV)curcop->cop_arybase);
499 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
502 sv_setpvn(sv,ofs,ofslen);
505 sv_setpvn(sv,ors,orslen);
512 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
513 sv_setpv(sv, errno ? Strerror(errno) : "");
516 int saveerrno = errno;
517 sv_setnv(sv, (double)errno);
519 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
522 sv_setpv(sv, errno ? Strerror(errno) : "");
526 SvNOK_on(sv); /* what a wonderful hack! */
529 sv_setiv(sv, (IV)uid);
532 sv_setiv(sv, (IV)euid);
535 sv_setiv(sv, (IV)gid);
537 (void)sprintf(s,"%d",(int)gid);
540 sv_setiv(sv, (IV)egid);
542 (void)sprintf(s,"%d",(int)egid);
547 Groups_t gary[NGROUPS];
549 i = getgroups(NGROUPS,gary);
551 (void)sprintf(s," %d", (int)gary[i]);
557 SvIOK_on(sv); /* what a wonderful hack! */
568 magic_getuvar(sv, mg)
572 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
574 if (uf && uf->uf_val)
575 (*uf->uf_val)(uf->uf_index, sv);
591 #ifdef DYNAMIC_ENV_FETCH
592 /* We just undefd an environment var. Is a replacement */
593 /* waiting in the wings? */
597 if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr;
598 else keysv = newSVpv(mg->mg_ptr,mg->mg_len);
599 if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0))
600 s = SvPV(HeVAL(envhe),len);
601 if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv);
604 /* And you'll never guess what the dog had */
605 /* in its mouth... */
607 if (s && strEQ(ptr,"PATH")) {
608 char *strend = s + len;
611 s = cpytill(tokenbuf,s,strend,':',&i);
614 || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
623 magic_clearenv(sv,mg)
627 my_setenv(MgPV(mg),Nullch);
637 /* Are we fetching a signal entry? */
638 i = whichsig(MgPV(mg));
641 sv_setsv(sv,psig_ptr[i]);
643 Sighandler_t sigstate = rsignal_state(i);
645 /* cache state so we don't fetch it again */
646 if(sigstate == SIG_IGN)
647 sv_setpv(sv,"IGNORE");
649 sv_setsv(sv,&sv_undef);
650 psig_ptr[i] = SvREFCNT_inc(sv);
657 magic_clearsig(sv,mg)
662 /* Are we clearing a signal entry? */
663 i = whichsig(MgPV(mg));
666 SvREFCNT_dec(psig_ptr[i]);
670 SvREFCNT_dec(psig_name[i]);
688 if (strEQ(s,"__DIE__"))
690 else if (strEQ(s,"__WARN__"))
692 else if (strEQ(s,"__PARSE__"))
695 croak("No such hook: %s", s);
703 i = whichsig(s); /* ...no, a brick */
705 if (dowarn || strEQ(s,"ALARM"))
706 warn("No such signal: SIG%s", s);
709 SvREFCNT_dec(psig_name[i]);
710 SvREFCNT_dec(psig_ptr[i]);
711 psig_ptr[i] = SvREFCNT_inc(sv);
712 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
713 psig_name[i] = newSVpv(s, strlen(s));
714 SvREADONLY_on(psig_name[i]);
716 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
718 (void)rsignal(i, sighandler);
720 *svp = SvREFCNT_inc(sv);
723 s = SvPV_force(sv,na);
724 if (strEQ(s,"IGNORE")) {
726 (void)rsignal(i, SIG_IGN);
730 else if (strEQ(s,"DEFAULT") || !*s) {
732 (void)rsignal(i, SIG_DFL);
737 if(hints & HINT_STRICT_REFS)
738 die(no_symref,s,"a subroutine");
739 if (!strchr(s,':') && !strchr(s,'\'')) {
740 sprintf(tokenbuf, "main::%s",s);
741 sv_setpv(sv,tokenbuf);
744 (void)rsignal(i, sighandler);
746 *svp = SvREFCNT_inc(sv);
763 magic_setamagic(sv,mg)
767 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
772 #endif /* OVERLOAD */
775 magic_setnkeys(sv,mg)
780 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
781 LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */
787 magic_methpack(sv,mg,meth)
801 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
802 else if (mg->mg_len == HEf_SVKEY)
803 PUSHs((SV*)mg->mg_ptr);
805 else if (mg->mg_type == 'p')
806 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
809 if (perl_call_method(meth, G_SCALAR))
810 sv_setsv(sv, *stack_sp--);
822 magic_methpack(sv,mg,"FETCH");
824 mg->mg_flags |= MGf_GSKIP;
840 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
841 else if (mg->mg_len == HEf_SVKEY)
842 PUSHs((SV*)mg->mg_ptr);
844 else if (mg->mg_type == 'p')
845 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
849 perl_call_method("STORE", G_SCALAR|G_DISCARD);
855 magic_clearpack(sv,mg)
859 return magic_methpack(sv,mg,"DELETE");
862 int magic_wipepack(sv,mg)
872 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
878 magic_nextpack(sv,mg,key)
884 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
895 if (perl_call_method(meth, G_SCALAR))
896 sv_setsv(key, *stack_sp--);
904 magic_existspack(sv,mg)
908 return magic_methpack(sv,mg,"EXISTS");
912 magic_setdbline(sv,mg)
923 svp = av_fetch(GvAV(gv),
924 atoi(MgPV(mg)), FALSE);
925 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
928 warn("Can't break at that line\n");
933 magic_getarylen(sv,mg)
937 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
942 magic_setarylen(sv,mg)
946 av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
955 SV* lsv = LvTARG(sv);
957 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
958 mg = mg_find(lsv, 'g');
959 if (mg && mg->mg_len >= 0) {
960 sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
973 SV* lsv = LvTARG(sv);
979 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
980 mg = mg_find(lsv, 'g');
984 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
985 mg = mg_find(lsv, 'g');
987 else if (!SvOK(sv)) {
991 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
993 pos = SvIV(sv) - curcop->cop_arybase;
1002 mg->mg_flags &= ~MGf_MINMATCH;
1008 magic_getglob(sv,mg)
1012 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1014 gv_efullname3(sv,((GV*)sv), "*");
1018 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1023 magic_setglob(sv,mg)
1033 if (*s == '*' && s[1])
1035 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1040 GvGP(sv) = gp_ref(GvGP(gv));
1045 magic_setsubstr(sv,mg)
1050 char *tmps = SvPV(sv,len);
1051 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1056 magic_gettaint(sv,mg)
1060 TAINT_IF((mg->mg_len & 1) ||
1061 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1066 magic_settaint(sv,mg)
1071 if (localizing == 1)
1088 do_vecset(sv); /* XXX slurp this routine */
1093 magic_getitervar(sv,mg)
1098 if (LvTARGLEN(sv)) {
1099 AV* av = (AV*)LvTARG(sv);
1100 if (LvTARGOFF(sv) <= AvFILL(av))
1101 targ = AvARRAY(av)[LvTARGOFF(sv)];
1105 sv_setsv(sv, targ ? targ : &sv_undef);
1110 magic_setitervar(sv,mg)
1117 sv_setsv(LvTARG(sv), sv);
1122 magic_freeitervar(sv,mg)
1126 SvREFCNT_dec(LvTARG(sv));
1138 av = (AV*)LvTARG(sv);
1139 if (LvTARGOFF(sv) <= AvFILL(av)) {
1140 SV** svp = AvARRAY(av) + LvTARGOFF(sv);
1141 LvTARG(sv) = newSVsv(*svp);
1143 *svp = SvREFCNT_inc(LvTARG(sv));
1146 LvTARG(sv) = Nullsv;
1152 magic_setmglob(sv,mg)
1166 sv_unmagic(sv, 'B');
1176 sv_unmagic(sv, 'f');
1182 magic_setuvar(sv,mg)
1186 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1188 if (uf && uf->uf_set)
1189 (*uf->uf_set)(uf->uf_index, sv);
1193 #ifdef USE_LOCALE_COLLATE
1195 magic_setcollxfrm(sv,mg)
1200 * René Descartes said "I think not."
1201 * and vanished with a faint plop.
1204 Safefree(mg->mg_ptr);
1210 #endif /* USE_LOCALE_COLLATE */
1220 switch (*mg->mg_ptr) {
1221 case '\001': /* ^A */
1222 sv_setsv(bodytarget, sv);
1224 case '\004': /* ^D */
1225 debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1226 DEBUG_x(dump_all());
1228 case '\005': /* ^E */
1230 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1232 /* will anyone ever use this? */
1233 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1236 case '\006': /* ^F */
1237 maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1239 case '\010': /* ^H */
1240 hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1246 inplace = savepv(SvPV(sv,na));
1250 case '\017': /* ^O */
1254 osname = savepv(SvPV(sv,na));
1258 case '\020': /* ^P */
1259 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1268 case '\024': /* ^T */
1270 basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1272 basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1275 case '\027': /* ^W */
1276 dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1280 if (localizing == 1)
1281 save_sptr((SV**)&last_in_gv);
1283 else if (SvOK(sv) && GvIO(last_in_gv))
1284 IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
1287 Safefree(IoTOP_NAME(GvIOp(defoutgv)));
1288 IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1289 IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1292 Safefree(IoFMT_NAME(GvIOp(defoutgv)));
1293 IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
1294 IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1297 IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1300 IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1301 if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
1302 IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
1305 IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1308 IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
1309 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
1310 IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
1314 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1315 multiline = (i != 0);
1321 rs = SvREFCNT_inc(nrs);
1326 if (SvOK(sv) || SvGMAGICAL(sv))
1327 ors = savepv(SvPV(sv,orslen));
1336 ofs = savepv(SvPV(sv, ofslen));
1341 ofmt = savepv(SvPV(sv,na));
1344 compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1347 #ifdef COMPLEX_STATUS
1348 if (localizing == 2) {
1349 statusvalue = LvTARGOFF(sv);
1350 statusvalue_vms = LvTARGLEN(sv);
1354 #ifdef VMSISH_STATUS
1356 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1359 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1362 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
1363 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1366 uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1368 delaymagic |= DM_RUID;
1369 break; /* don't do magic till later */
1372 (void)setruid((Uid_t)uid);
1375 (void)setreuid((Uid_t)uid, (Uid_t)-1);
1377 #ifdef HAS_SETRESUID
1378 (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1);
1380 if (uid == euid) /* special case $< = $> */
1383 uid = (I32)getuid();
1384 croak("setruid() not implemented");
1389 uid = (I32)getuid();
1390 tainting |= (uid && (euid != uid || egid != gid));
1393 euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1395 delaymagic |= DM_EUID;
1396 break; /* don't do magic till later */
1399 (void)seteuid((Uid_t)euid);
1402 (void)setreuid((Uid_t)-1, (Uid_t)euid);
1404 #ifdef HAS_SETRESUID
1405 (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1);
1407 if (euid == uid) /* special case $> = $< */
1410 euid = (I32)geteuid();
1411 croak("seteuid() not implemented");
1416 euid = (I32)geteuid();
1417 tainting |= (uid && (euid != uid || egid != gid));
1420 gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1422 delaymagic |= DM_RGID;
1423 break; /* don't do magic till later */
1426 (void)setrgid((Gid_t)gid);
1429 (void)setregid((Gid_t)gid, (Gid_t)-1);
1431 #ifdef HAS_SETRESGID
1432 (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1);
1434 if (gid == egid) /* special case $( = $) */
1437 gid = (I32)getgid();
1438 croak("setrgid() not implemented");
1443 gid = (I32)getgid();
1444 tainting |= (uid && (euid != uid || egid != gid));
1447 egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1449 delaymagic |= DM_EGID;
1450 break; /* don't do magic till later */
1453 (void)setegid((Gid_t)egid);
1456 (void)setregid((Gid_t)-1, (Gid_t)egid);
1458 #ifdef HAS_SETRESGID
1459 (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1);
1461 if (egid == gid) /* special case $) = $( */
1464 egid = (I32)getegid();
1465 croak("setegid() not implemented");
1470 egid = (I32)getegid();
1471 tainting |= (uid && (euid != uid || egid != gid));
1474 chopset = SvPV_force(sv,na);
1480 /* See if all the arguments are contiguous in memory */
1481 for (i = 1; i < origargc; i++) {
1482 if (origargv[i] == s + 1)
1483 s += strlen(++s); /* this one is ok too */
1485 /* can grab env area too? */
1486 if (origenviron && origenviron[0] == s + 1) {
1487 my_setenv("NoNeSuCh", Nullch);
1488 /* force copy of environment */
1489 for (i = 0; origenviron[i]; i++)
1490 if (origenviron[i] == s + 1)
1493 origalen = s - origargv[0];
1495 s = SvPV_force(sv,len);
1497 if (i >= origalen) {
1501 Copy(s, origargv[0], i, char);
1504 Copy(s, origargv[0], i, char);
1507 while (++i < origalen)
1510 for (i = 1; i < origargc; i++)
1511 origargv[i] = Nullch;
1522 register char **sigv;
1524 for (sigv = sig_name+1; *sigv; sigv++)
1525 if (strEQ(sig,*sigv))
1526 return sig_num[sigv - sig_name];
1528 if (strEQ(sig,"CHLD"))
1532 if (strEQ(sig,"CLD"))
1550 die("Signal SIG%s received, but no signal handler set.\n",
1553 cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
1554 if (!cv || !CvROOT(cv)) {
1556 warn("SIG%s handler \"%s\" not defined.\n",
1557 sig_name[sig], GvENAME(gv) );
1561 oldstack = curstack;
1562 if (curstack != signalstack)
1563 AvFILL(signalstack) = 0;
1564 SWITCHSTACK(curstack, signalstack);
1567 sv = SvREFCNT_inc(psig_name[sig]);
1569 sv = sv_newmortal();
1570 sv_setpv(sv,sig_name[sig]);
1576 perl_call_sv((SV*)cv, G_DISCARD);
1578 SWITCHSTACK(signalstack, oldstack);